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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300

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College Physics

11th Edition
Raymond A. Serway + 1 other
ISBN: 9781305952300
Textbook Problem

As an airplane flying with constant velocity moves from a cold air mass into a warm air mass, does the Mach number (a) increase, (b) decrease, or (c) remain the same?

To determine
what happens to the Mach number when the airplane flying with constant velocity moves from a cold air mass into a warm air mass.

Explanation

Given Info: Air plane is moving from a cold air mass into a warm air mass.

Formula to calculate the Mach number is,

Machnumber=vvs

  • v is the speed of the source (air plane)
  • vs is the speed of the sound.

Mach number is the ratio of the speed of airplane to the speed of the sound.

The expression for the speed of sound in air is,

vs=(331m/

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